It's no secret that soccer is huge in Brazil. Malware authors are certainly well aware of the nation's affinity for the sport, and have launched a World Cup-themed scam this week targeting executives at many of the largest firms in the country.

A new World Cup-themed malware scam this week is using a PDF attachment and a malicious link in tandem to trick high-ranking executives at dozens of Brazil's largest corporations into downloading malicious digital cargo.

This latest socially engineered World Cup malware campaign has been under way for a little more than a week, according to an advisory on Symantec's (NASDAQ: SYMC) MessageLabs Intelligence blog.